SCM cscalar_field_make(SCM f0)
{
int i;
field_smob *pf;
field_smob *pf0 = assert_field_smob(f0);
CHK_MALLOC(pf, field_smob, 1);
*pf = *pf0;
pf->type = CSCALAR_FIELD_SMOB;
pf->type_char = 'C';
CHK_MALLOC(pf->f.cs, scalar_complex, pf->N);
for (i = 0; i < pf->N; ++i)
CASSIGN_ZERO(pf->f.cs[i]);
return field2scm(pf);
}
SCM rscalar_field_make(SCM f0)
{
int i;
field_smob *pf;
field_smob *pf0 = assert_field_smob(f0);
CHK_MALLOC(pf, field_smob, 1);
*pf = *pf0;
pf->type = RSCALAR_FIELD_SMOB;
pf->type_char = 'R';
CHK_MALLOC(pf->f.rs, real, pf->N);
for (i = 0; i < pf->N; ++i)
pf->f.rs[i] = 0.0;
return field2scm(pf);
}
SCM cvector_field_make(SCM f0)
{
int i;
field_smob *pf;
field_smob *pf0 = assert_field_smob(f0);
CHECK(mdata, "init-params must be called before cvector-field-make");
CHK_MALLOC(pf, field_smob, 1);
*pf = *pf0;
pf->type = CVECTOR_FIELD_SMOB;
pf->type_char = 'c';
CHK_MALLOC(pf->f.cv, scalar_complex, 3 * pf->N);
for (i = 0; i < pf->N * 3; ++i)
CASSIGN_ZERO(pf->f.cv[i]);
return field2scm(pf);
}
void lapackglue_geev(char jobvl, char jobvr, int n,
scalar *A, int fdA, scalar_complex *w,
scalar *VL, int fdVL, scalar *VR, int fdVR,
scalar *work, int lwork, real *rwork)
{
int info;
#ifdef SCALAR_COMPLEX
F(geev,GEEV) (&jobvl, &jobvr, &n, A, &fdA, w, VL, &fdVL, VR, &fdVR,
work, &lwork, rwork, &info);
#else
int i;
real *wr, *wi;
CHK_MALLOC(wr, real, 2*n);
wi = wr + n;
(void) rwork; /* unused */
FR(geev,GEEV) (&jobvl, &jobvr, &n, A, &fdA, wr, wi, VL, &fdVL, VR, &fdVR,
work, &lwork, &info);
for (i = 0; i < n; ++i)
CASSIGN_SCALAR(w[i], wr[i], wi[i]);
free(wr);
#endif
CHECK(info >= 0, "invalid argument in geev");
CHECK(info <= 0, "failure to converge in geev");
}
static material_type make_medium(double epsilon, double mu)
{
material_type m;
m.which_subclass = MEDIUM;
CHK_MALLOC(m.subclass.medium_data, medium, 1);
m.subclass.medium_data->epsilon = epsilon;
m.subclass.medium_data->mu = mu;
return m;
}
SCM sqmatrix2scm(sqmatrix m)
{
SCM obj;
sqmatrix *mp;
CHK_MALLOC(mp, sqmatrix, 1);
*mp = create_sqmatrix(m.p);
sqmatrix_copy(*mp, m);
NEWCELL_SMOB(obj, sqmatrix, mp);
return obj;
}
/* return a Scheme object *copy* of m */
SCM evectmatrix2scm(evectmatrix m)
{
SCM obj;
evectmatrix *mp;
CHK_MALLOC(mp, evectmatrix, 1);
*mp = create_evectmatrix(m.N, m.c, m.p, m.localN, m.Nstart, m.allocN);
evectmatrix_copy(*mp, m);
NEWCELL_SMOB(obj, evectmatrix, mp);
return obj;
}
/* return a Scheme object *copy* of the given columns of m */
SCM evectmatrix_slice2scm(evectmatrix m, int p_start, int p)
{
SCM obj;
evectmatrix *mp;
CHECK(p_start >= 0 && p_start + p <= m.p && p >= 0,
"invalid arguments in evectmatrix_slice2scm");
CHK_MALLOC(mp, evectmatrix, 1);
*mp = create_evectmatrix(m.N, m.c, p, m.localN, m.Nstart, m.allocN);
evectmatrix_copy_slice(*mp, m, 0, p_start, p);
NEWCELL_SMOB(obj, evectmatrix, mp);
return obj;
}
maxwell_target_data *create_maxwell_target_data(maxwell_data *md,
real target_frequency)
{
maxwell_target_data *d;
CHK_MALLOC(d, maxwell_target_data, 1);
d->d = md;
d->target_frequency = target_frequency;
return d;
}
evectconstraint_chain *evect_add_constraint(evectconstraint_chain *constraints,
evectconstraint C,
void *constraint_data)
{
evectconstraint_chain *new_constraints;
CHK_MALLOC(new_constraints, evectconstraint_chain, 1);
new_constraints->C = C;
new_constraints->constraint_data = constraint_data;
new_constraints->next = constraints;
return new_constraints;
}
maxwell_data *create_maxwell_data(int nx, int ny, int nz,
int *local_N, int *N_start, int *alloc_N,
int num_bands,
int max_fft_bands)
{
int n[3], rank = (nz == 1) ? (ny == 1 ? 1 : 2) : 3;
maxwell_data *d = 0;
int fft_data_size;
n[0] = nx;
n[1] = ny;
n[2] = nz;
#if !defined(HAVE_FFTW) && !defined(HAVE_FFTW3)
# error Non-FFTW FFTs are not currently supported.
#endif
#if defined(HAVE_FFTW)
CHECK(sizeof(fftw_real) == sizeof(real),
"floating-point type is inconsistent with FFTW!");
#endif
CHK_MALLOC(d, maxwell_data, 1);
d->nx = nx;
d->ny = ny;
d->nz = nz;
d->max_fft_bands = MIN2(num_bands, max_fft_bands);
maxwell_set_num_bands(d, num_bands);
d->current_k[0] = d->current_k[1] = d->current_k[2] = 0.0;
d->parity = NO_PARITY;
d->last_dim_size = d->last_dim = n[rank - 1];
/* ----------------------------------------------------- */
d->nplans = 1;
#ifndef HAVE_MPI
d->local_nx = nx; d->local_ny = ny;
d->local_x_start = d->local_y_start = 0;
*local_N = *alloc_N = nx * ny * nz;
*N_start = 0;
d->other_dims = *local_N / d->last_dim;
d->fft_data = 0; /* initialize it here for use in specific planner? */
# if defined(HAVE_FFTW3)
d->nplans = 0; /* plans will be created as needed */
# ifdef SCALAR_COMPLEX
d->fft_output_size = fft_data_size = nx * ny * nz;
# else
d->last_dim_size = 2 * (d->last_dim / 2 + 1);
d->fft_output_size = (fft_data_size = d->other_dims * d->last_dim_size)/2;
# endif
# elif defined(HAVE_FFTW)
# ifdef SCALAR_COMPLEX
d->fft_output_size = fft_data_size = nx * ny * nz;
d->plans[0] = fftwnd_create_plan_specific(rank, n, FFTW_BACKWARD,
FFTW_ESTIMATE | FFTW_IN_PLACE,
(fftw_complex*) d->fft_data,
3 * d->num_fft_bands,
(fftw_complex*) d->fft_data,
3 * d->num_fft_bands);
d->iplans[0] = fftwnd_create_plan_specific(rank, n, FFTW_FORWARD,
FFTW_ESTIMATE | FFTW_IN_PLACE,
(fftw_complex*) d->fft_data,
3 * d->num_fft_bands,
(fftw_complex*) d->fft_data,
3 * d->num_fft_bands);
# else /* not SCALAR_COMPLEX */
d->last_dim_size = 2 * (d->last_dim / 2 + 1);
d->fft_output_size = (fft_data_size = d->other_dims * d->last_dim_size)/2;
d->plans[0] = rfftwnd_create_plan_specific(rank, n, FFTW_COMPLEX_TO_REAL,
FFTW_ESTIMATE | FFTW_IN_PLACE,
(fftw_real*) d->fft_data,
3 * d->num_fft_bands,
(fftw_real*) d->fft_data,
3 * d->num_fft_bands);
d->iplans[0] = rfftwnd_create_plan_specific(rank, n, FFTW_REAL_TO_COMPLEX,
FFTW_ESTIMATE | FFTW_IN_PLACE,
(fftw_real*) d->fft_data,
3 * d->num_fft_bands,
(fftw_real*) d->fft_data,
3 * d->num_fft_bands);
# endif /* not SCALAR_COMPLEX */
# endif /* HAVE_FFTW */
#else /* HAVE_MPI */
/* ----------------------------------------------------- */
# if defined(HAVE_FFTW3)
{
int i;
ptrdiff_t np[3], local_nx, local_ny, local_x_start, local_y_start;
CHECK(rank > 1, "rank < 2 MPI computations are not supported");
d->nplans = 0; /* plans will be created as needed */
for (i = 0; i < rank; ++i) np[i] = n[i];
# ifndef SCALAR_COMPLEX
d->last_dim_size = 2 * (np[rank-1] = d->last_dim / 2 + 1);
# endif
fft_data_size = *alloc_N
= FFTW(mpi_local_size_transposed)(rank, np, MPI_COMM_WORLD,
&local_nx, &local_x_start,
&local_ny, &local_y_start);
# ifndef SCALAR_COMPLEX
fft_data_size = (*alloc_N *= 2); // convert to # of real scalars
# endif
d->local_nx = local_nx;
d->local_x_start = local_x_start;
d->local_ny = local_ny;
d->local_y_start = local_y_start;
d->fft_output_size = nx * d->local_ny * (rank==3 ? np[2] : nz);
*local_N = d->local_nx * ny * nz;
*N_start = d->local_x_start * ny * nz;
d->other_dims = *local_N / d->last_dim;
}
# elif defined(HAVE_FFTW)
CHECK(rank > 1, "rank < 2 MPI computations are not supported");
# ifdef SCALAR_COMPLEX
d->iplans[0] = fftwnd_mpi_create_plan(MPI_COMM_WORLD, rank, n,
FFTW_FORWARD,
FFTW_ESTIMATE | FFTW_IN_PLACE);
{
int nt[3]; /* transposed dimensions for reverse FFT */
nt[0] = n[1]; nt[1] = n[0]; nt[2] = n[2];
d->plans[0] = fftwnd_mpi_create_plan(MPI_COMM_WORLD, rank, nt,
FFTW_BACKWARD,
FFTW_ESTIMATE | FFTW_IN_PLACE);
}
fftwnd_mpi_local_sizes(d->iplans[0], &d->local_nx, &d->local_x_start,
&d->local_ny, &d->local_y_start,
&fft_data_size);
d->fft_output_size = nx * d->local_ny * nz;
# else /* not SCALAR_COMPLEX */
CHECK(rank > 1, "rank < 2 MPI computations are not supported");
d->iplans[0] = rfftwnd_mpi_create_plan(MPI_COMM_WORLD, rank, n,
FFTW_REAL_TO_COMPLEX,
FFTW_ESTIMATE | FFTW_IN_PLACE);
/* Unlike fftwnd_mpi, we do *not* pass transposed dimensions for
the reverse transform here--we always pass the dimensions of the
original real array, and rfftwnd_mpi assumes that if one
transform is transposed, then the other is as well. */
d->plans[0] = rfftwnd_mpi_create_plan(MPI_COMM_WORLD, rank, n,
FFTW_COMPLEX_TO_REAL,
FFTW_ESTIMATE | FFTW_IN_PLACE);
rfftwnd_mpi_local_sizes(d->iplans[0], &d->local_nx, &d->local_x_start,
&d->local_ny, &d->local_y_start,
&fft_data_size);
d->last_dim_size = 2 * (d->last_dim / 2 + 1);
if (rank == 2)
d->fft_output_size = nx * d->local_ny * nz;
else
d->fft_output_size = nx * d->local_ny * (d->last_dim_size / 2);
# endif /* not SCALAR_COMPLEX */
*local_N = d->local_nx * ny * nz;
*N_start = d->local_x_start * ny * nz;
*alloc_N = *local_N;
d->other_dims = *local_N / d->last_dim;
# endif /* HAVE_FFTW */
#endif /* HAVE_MPI */
/* ----------------------------------------------------- */
#ifdef HAVE_FFTW
CHECK(d->plans[0] && d->iplans[0], "FFTW plan creation failed");
#endif
CHK_MALLOC(d->eps_inv, symmetric_matrix, d->fft_output_size);
/* A scratch output array is required because the "ordinary" arrays
are not in a cartesian basis (or even a constant basis). */
fft_data_size *= d->max_fft_bands;
#if defined(HAVE_FFTW3)
d->fft_data = (scalar *) FFTW(malloc)(sizeof(scalar) * 3 * fft_data_size);
CHECK(d->fft_data, "out of memory!");
d->fft_data2 = d->fft_data; /* works in-place */
#else
CHK_MALLOC(d->fft_data, scalar, 3 * fft_data_size);
d->fft_data2 = d->fft_data; /* works in-place */
#endif
CHK_MALLOC(d->k_plus_G, k_data, *local_N);
CHK_MALLOC(d->k_plus_G_normsqr, real, *local_N);
d->eps_inv_mean = 1.0;
d->local_N = *local_N;
d->N_start = *N_start;
d->alloc_N = *alloc_N;
d->N = nx * ny * nz;
return d;
}
int main(int argc, char **argv)
{
maxwell_data *mdata;
maxwell_target_data *mtdata = NULL;
int local_N, N_start, alloc_N;
real R[3][3] = { {1,0,0}, {0,0.01,0}, {0,0,0.01} };
real G[3][3] = { {1,0,0}, {0,100,0}, {0,0,100} };
real kvector[3] = {KX,0,0};
evectmatrix H, Hstart, W[NWORK];
real *eigvals;
int i, iters;
int num_iters;
int parity = NO_PARITY;
int nx = NX, ny = NY, nz = NZ;
int num_bands = NUM_BANDS;
real target_freq = 0.0;
int do_target = 0;
evectoperator op;
evectpreconditioner pre_op;
void *op_data, *pre_op_data;
real error_tol = ERROR_TOL;
int mesh_size = MESH_SIZE, mesh[3];
epsilon_data ed;
int stop1 = 0;
int verbose = 0;
int which_preconditioner = 2;
double max_err = 1e20;
srand(time(NULL));
#if defined(DEBUG) && defined(HAVE_FEENABLEEXCEPT)
feenableexcept(FE_INVALID | FE_OVERFLOW); /* crash on NaN/overflow */
#endif
ed.eps_high = EPS_HIGH;
ed.eps_low = EPS_LOW;
ed.eps_high_x = EPS_HIGH_X;
#ifdef HAVE_GETOPT
{
extern char *optarg;
extern int optind;
int c;
while ((c = getopt(argc, argv, "hs:k:b:n:f:x:y:z:emt:c:g:1pvE:"))
!= -1)
switch (c) {
case 'h':
usage();
exit(EXIT_SUCCESS);
break;
case 's':
srand(atoi(optarg));
break;
case 'k':
kvector[0] = atof(optarg);
break;
case 'b':
num_bands = atoi(optarg);
CHECK(num_bands > 0, "num_bands must be positive");
break;
case 'n':
ed.eps_high = atof(optarg);
CHECK(ed.eps_high > 0.0, "index must be positive");
ed.eps_high = ed.eps_high * ed.eps_high;
break;
case 'f':
ed.eps_high_x = atof(optarg);
CHECK(ed.eps_high_x > 0.0, "fill must be positive");
break;
case 'x':
nx = atoi(optarg);
CHECK(nx > 0, "x size must be positive");
break;
case 'y':
ny = atoi(optarg);
CHECK(ny > 0, "y size must be positive");
break;
case 'z':
nz = atoi(optarg);
CHECK(nz > 0, "z size must be positive");
break;
case 'e':
parity = EVEN_Z_PARITY;
break;
case 'm':
parity = ODD_Z_PARITY;
break;
case 't':
target_freq = fabs(atof(optarg));
do_target = 1;
break;
case 'E':
max_err = fabs(atof(optarg));
CHECK(max_err > 0, "maximum error must be positive");
break;
case 'c':
error_tol = fabs(atof(optarg));
break;
case 'g':
mesh_size = atoi(optarg);
CHECK(mesh_size > 0, "mesh size must be positive");
break;
case '1':
stop1 = 1;
break;
case 'p':
which_preconditioner = 1;
break;
case 'v':
verbose = 1;
break;
default:
usage();
exit(EXIT_FAILURE);
}
if (argc != optind) {
usage();
exit(EXIT_FAILURE);
}
}
#endif
#ifdef ENABLE_PROF
stop1 = 1;
#endif
mesh[0] = mesh[1] = mesh[2] = mesh_size;
printf("Creating Maxwell data...\n");
mdata = create_maxwell_data(nx, ny, nz, &local_N, &N_start, &alloc_N,
num_bands, NUM_FFT_BANDS);
CHECK(mdata, "NULL mdata");
set_maxwell_data_parity(mdata, parity);
printf("Setting k vector to (%g, %g, %g)...\n",
kvector[0], kvector[1], kvector[2]);
update_maxwell_data_k(mdata, kvector, G[0], G[1], G[2]);
printf("Initializing dielectric...\n");
/* set up dielectric function (a simple Bragg mirror) */
set_maxwell_dielectric(mdata, mesh, R, G, epsilon, 0, &ed);
if (verbose && ny == 1 && nz == 1) {
printf("dielectric function:\n");
for (i = 0; i < nx; ++i) {
if (mdata->eps_inv[i].m00 == mdata->eps_inv[i].m11)
printf(" eps(%g) = %g\n", i * 1.0 / nx,
1.0/mdata->eps_inv[i].m00);
else
printf(" eps(%g) = x: %g OR y: %g\n", i * 1.0 / nx,
1.0/mdata->eps_inv[i].m00,
1.0/mdata->eps_inv[i].m11);
}
printf("\n");
}
printf("Allocating fields...\n");
H = create_evectmatrix(nx * ny * nz, 2, num_bands,
local_N, N_start, alloc_N);
Hstart = create_evectmatrix(nx * ny * nz, 2, num_bands,
local_N, N_start, alloc_N);
for (i = 0; i < NWORK; ++i)
W[i] = create_evectmatrix(nx * ny * nz, 2, num_bands,
local_N, N_start, alloc_N);
CHK_MALLOC(eigvals, real, num_bands);
for (iters = 0; iters < PROF_ITERS; ++iters) {
printf("Initializing fields...\n");
for (i = 0; i < H.n * H.p; ++i)
ASSIGN_REAL(Hstart.data[i], rand() * 1.0 / RAND_MAX);
/*****************************************/
if (do_target) {
printf("\nSolving for eigenvectors close to %f...\n", target_freq);
mtdata = create_maxwell_target_data(mdata, target_freq);
op = maxwell_target_operator;
if (which_preconditioner == 1)
pre_op = maxwell_target_preconditioner;
else
pre_op = maxwell_target_preconditioner2;
op_data = (void *) mtdata;
pre_op_data = (void *) mtdata;
}
else {
op = maxwell_operator;
if (which_preconditioner == 1)
pre_op = maxwell_preconditioner;
else
pre_op = maxwell_preconditioner2;
op_data = (void *) mdata;
pre_op_data = (void *) mdata;
}
/*****************************************/
printf("\nSolving for eigenvectors with preconditioning...\n");
evectmatrix_copy(H, Hstart);
eigensolver(H, eigvals,
op, op_data, NULL,NULL,
pre_op, pre_op_data,
maxwell_parity_constraint, (void *) mdata,
W, NWORK, error_tol, &num_iters, EIGS_DEFAULT_FLAGS);
if (do_target)
eigensolver_get_eigenvals(H, eigvals, maxwell_operator, mdata,
W[0], W[1]);
printf("Solved for eigenvectors after %d iterations.\n", num_iters);
printf("%15s%15s%15s%15s\n","eigenval", "frequency", "exact freq.",
"error");
for (i = 0; i < num_bands; ++i) {
double err;
real freq = sqrt(eigvals[i]);
real exact_freq = bragg_omega(freq, kvector[0], sqrt(ed.eps_high),
ed.eps_high_x, sqrt(ed.eps_low),
1.0 - ed.eps_high_x, 1.0e-7);
printf("%15f%15f%15f%15e\n", eigvals[i], freq, exact_freq,
err = fabs(freq - exact_freq) / exact_freq);
CHECK(err <= max_err, "error exceeds tolerance");
}
printf("\n");
for (i = 0; i < num_bands; ++i) {
real kdom[3];
real k;
maxwell_dominant_planewave(mdata, H, i + 1, kdom);
if ((i + 1) % 2 == 1)
k = kvector[0] + (i + 1) / 2;
else
k = kvector[0] - (i + 1) / 2;
if (kvector[0] > 0 && kvector[0] < 0.5 && ed.eps_high == 1) {
printf("Expected kdom: %15f%15f%15f\n", k, kvector[1], kvector[2]);
printf("Got kdom: %15f%15f%15f\n", kdom[0], kdom[1], kdom[2]);
CHECK(k == kdom[0] && kvector[1] == kdom[1] && kvector[2] == kdom[2],
"unexpected result from maxwell_dominant_planewave");
}
}
}
if (!stop1) {
/*****************************************/
printf("\nSolving for eigenvectors without preconditioning...\n");
evectmatrix_copy(H, Hstart);
eigensolver(H, eigvals,
op, op_data, NULL,NULL,
NULL, NULL,
maxwell_parity_constraint, (void *) mdata,
W, NWORK, error_tol, &num_iters, EIGS_DEFAULT_FLAGS);
if (do_target)
eigensolver_get_eigenvals(H, eigvals, maxwell_operator, mdata,
W[0], W[1]);
printf("Solved for eigenvectors after %d iterations.\n", num_iters);
printf("%15s%15s%15s%15s\n","eigenval", "frequency", "exact freq.",
"error");
for (i = 0; i < num_bands; ++i) {
double err;
real freq = sqrt(eigvals[i]);
real exact_freq = bragg_omega(freq, kvector[0], sqrt(ed.eps_high),
ed.eps_high_x, sqrt(ed.eps_low),
1.0 - ed.eps_high_x, 1.0e-7);
printf("%15f%15f%15f%15e\n", eigvals[i], freq, exact_freq,
err = fabs(freq - exact_freq) / exact_freq);
CHECK(err <= max_err, "error exceeds tolerance");
}
printf("\n");
/*****************************************/
printf("\nSolving for eigenvectors without conj. grad...\n");
evectmatrix_copy(H, Hstart);
eigensolver(H, eigvals,
op, op_data, NULL,NULL,
pre_op, pre_op_data,
maxwell_parity_constraint, (void *) mdata,
W, NWORK - 1, error_tol, &num_iters, EIGS_DEFAULT_FLAGS);
if (do_target)
eigensolver_get_eigenvals(H, eigvals, maxwell_operator, mdata,
W[0], W[1]);
printf("Solved for eigenvectors after %d iterations.\n", num_iters);
printf("%15s%15s%15s%15s\n","eigenval", "frequency", "exact freq.",
"error");
for (i = 0; i < num_bands; ++i) {
double err;
real freq = sqrt(eigvals[i]);
real exact_freq = bragg_omega(freq, kvector[0], sqrt(ed.eps_high),
ed.eps_high_x, sqrt(ed.eps_low),
1.0 - ed.eps_high_x, 1.0e-7);
printf("%15f%15f%15f%15e\n", eigvals[i], freq, exact_freq,
err = fabs(freq - exact_freq) / exact_freq);
CHECK(err <= max_err, "error exceeds tolerance");
}
printf("\n");
/*****************************************/
printf("\nSolving for eigenvectors without precond. or conj. grad...\n");
evectmatrix_copy(H, Hstart);
eigensolver(H, eigvals,
op, op_data,
NULL, NULL, NULL,NULL,
maxwell_parity_constraint, (void *) mdata,
W, NWORK - 1, error_tol, &num_iters, EIGS_DEFAULT_FLAGS);
if (do_target)
eigensolver_get_eigenvals(H, eigvals, maxwell_operator, mdata,
W[0], W[1]);
printf("Solved for eigenvectors after %d iterations.\n", num_iters);
printf("%15s%15s%15s%15s\n","eigenval", "frequency", "exact freq.",
"error");
for (i = 0; i < num_bands; ++i) {
double err;
real freq = sqrt(eigvals[i]);
real exact_freq = bragg_omega(freq, kvector[0], sqrt(ed.eps_high),
ed.eps_high_x, sqrt(ed.eps_low),
1.0 - ed.eps_high_x, 1.0e-7);
printf("%15f%15f%15f%15e\n", eigvals[i], freq, exact_freq,
err = fabs(freq - exact_freq) / exact_freq);
CHECK(err <= max_err, "error exceeds tolerance");
}
printf("\n");
/*****************************************/
}
destroy_evectmatrix(H);
destroy_evectmatrix(Hstart);
for (i = 0; i < NWORK; ++i)
destroy_evectmatrix(W[i]);
destroy_maxwell_target_data(mtdata);
destroy_maxwell_data(mdata);
free(eigvals);
debug_check_memory_leaks();
return EXIT_SUCCESS;
}
